Bryotropha terrella
In 3 days ~10% in a week ~20%
Bryotropha terrella is a moth of the family Gelechiidae. It is the type species of the genus Bryotropha. It is found in Europe. The wingspan is 14–16 mm. Forewings very variable in ground colour - dark fuscous, shades of brown and grey to cream (coastal form), dark shining bronzy base of costa purplish-tinged. Variously showing the ‘bryotropha’ spots, a sub-terminal fascia and spots around the wing tip or unicolorous. Hindwings grey. Certain identification is by miscroscopic examination of the genitalia.
The moths are on wing from May to August depending on the location. The larvae feed on various mosses and grasses, including Rhytidiadelphus squarrosus, Syntrichia ruraliformis, Hypnum jutlandicum, Calliergonella cuspidata and Agrostis capillaris. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Snowdonia National Park | 🇬🇧 United Kingdom | |
| 2 | Bavarian Forest National Park | 🇩🇪 Germany |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Liverpool | 🇬🇧 United Kingdom | |
| 2 | London | 🇬🇧 United Kingdom | |
| 3 | Birmingham | 🇬🇧 United Kingdom |
Rare
Under 5% of wildlife watchers report a Cinerous Neb sighting in Birmingham on a given day, based on 8 verified sightings from GBIF citizen-science data. It is the 563rd most-seen of the 811 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 20%, if each day is a fresh chance.
June
In that month about 10% of wildlife watchers report a Cinerous Neb in Birmingham on a given day, against under 5% in July to May, the lowest months.
Between 6 and 9 am
Across all the parks we cover, that three-hour window holds the most Cinerous Neb sightings with a recorded time, and about 6 in 10 of them come between 6 am and 6 pm: it is seen both by day and at night.
3rd of 3
Of the 3 cities where we can rate Cinerous Neb sightings, Birmingham ranks 3rd at under 5%. The best odds are in Liverpool (United Kingdom, about 10%) and London (United Kingdom, about 10%).
GBIF citizen-science records
It is estimated from how often the Cinerous Neb is recorded against all the insects logged in Birmingham (8 verified sightings), calibrated against known sighting rates. Figures are rounded to the nearest 10% because citizen-science data supports honest approximations, not decimals, and months with records from fewer than five people show "—". How it works.
